What was found
#1 COWL ANTI ICE ILLUMINATED IN CRUISE. WENT OUT WHEN ENG SLOWED TO .76M AND BELOW 88% N1. GROUNDED - YES. REMOVED & REPLACED #1 ENG COWL TAI VLV LK & OPS NORMAL REF B737-900 AMM 30-21-11.
- Difficulty date
- February 12, 2022
- Submitted
- February 15, 2022
- Operation
- Air carrier
- Aircraft
- N486AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 44107
- Aircraft time
- 23,743 hours, 7,539 cycles
- System (JASC)
- 3020 · Air Intake Anti/De-Ice System
- Part
- Anti-Ice Valve
- Part number
- 32156185
- Part serial
- 12332
- Condition
- Intermittent
- Location
- #1 Engine
- Part time
- 23,750 hours, 7,542 cycles
- Stage of operation
- CR
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.